- Patient has hemoglobin ≥ 10 g/dl, leucocytes count ≥ 3 000/mcl, thrombocytes count ≥ 100 000/mcl, neutrophil count ≥ 2 000/mcl, aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase exceed 2,5 or less times the upper limit of the normal range creatinine less than 176,8 µmol/l, no serologic or virologic markers of hepatitis B virus and hepatitis C virus, negative urine pregnancy test, no signs of tuberculosis (negative tuberculosis skin test or negative quantiferon test. Patients can be included in they have positive tuberculin test, have had Bacteria Calmette-Guerin (BCG) vaccination and have negative Diaskintest or negative quantiferon test. Patients can be included if they have positive tuberculin test, have not been vaccinated with BCG and also patients with positive or uncertain quantiferon test/Diaskintest if they have documented adequate prophylaxis of tuberculosis finished before first adalimumab injection AND have documented absence of contacts with patients who have active tuberculosis AND have no signs of tuberculosis on chest X-Ray that was performed during 3 months before randomization)